| Candidate name | Party | Gender | Number of votes | Share (%) | Change vs. 2017 for party (percentage points) | ||
| Jim McMahon | Labour and Co-operative | Male | 24,579 | 55.3% | -9.9 | ||
| Kirsty Finlayson | Conservative | Female | 13,452 | 30.3% | +2.7 | ||
| Helen Formby | Brexit Party | Female | 3,316 | 7.5% | 0.0 | ||
| Garth Harkness | Liberal Democrat | Male | 1,484 | 3.3% | +1.3 | ||
| Dan Jerrome | Green | Male | 681 | 1.5% | +0.6 | ||
| Debbie Cole | Proud of Oldham & Saddleworth | Female | 533 | 1.2% | 0.0 | ||
| Anthony Prince | UK Independence Party | Male | 389 | 0.9% | -3.3 |
| Election statistics | ||
| Majority | ||
| Votes | 11,127 | |
| Percent | 25.0% | |
| Rank (1 = highest %) | 303 | |
| Turnout | ||
| Constituency | 60.9% | |
| Region | 65.6% | |
| UK | 67.3% | |
| Constituency in 2017 | 63.2% | |
| Size of electorate | 72,999 | |
| Valid votes cast | 44,434 |